是否有从列表中生成元组的 scala 列表操作? [英] Is there a scala list operation that makes tuples from lists?

问题描述

我正在尝试处理列表中的三元组.当务之急，我可以这样做:

I'm trying to process triplets in a list. Imperatively, I could do this:

for(i = 1; i < list.length-1; i++)
{
   process( list[i-1], list[i], list[i+1] )
}

Scala 中是否有一个 List 函数(或者如何编写它)可以做这样的事情:

Is there a List function in Scala (or how would one write it) that can do something like this:

val data = [1,2,3,4,5,6,7,8,9,10]
val tuples = data.some_magic_func
tuples would be[(1,2,3), (2,3,4), (3,4,5), (4,5,6) ... ]

谢谢！

推荐答案

val data = List(1,2,3,4,5,6,7,8,9,10)
val tuples = data.sliding(3).toList
// tuples would be List(List(1,2,3), List(2,3,4), List(3,4,5), List(4,5,6) ... )

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